Illuminated display globe



May 26, 1931.

E. STRAW ILLUMINATED DISPLAY GLOBE Filed May 25 1928 2 Sheets$heet 1 FIG.

- INVENTOR Ed wa rd F. S'f ra w his aftorneg M'ay26, 1931. ,E. F. STRAW 1,806,769

ILLUMINATED DISPLAY GLOBE .Filed May 25 1928 2 Sheets-Sheet 2 INVENTORA Edward F Sfraw b zwwm dz/m his a-t-torneff '15 the globe is broken, it

- 2 pensive Patented May 26, 1931 UNITED STATES PATENT OFFICE EDWARD F. STRAW, F FITTSB'URGH, PENNSYLVANIA, ASSIGNOB TO SAMUEL BEER, OF

PITTSBURGH, PENNSYLVANIA ILLUMINATED DISPLAY GLOBE Application filed May 25, 1928 Serial No. 280,472.

This invention relates to glass globes for electrical display lights;

It has been common practice to mount electric lights over thedispensing pumps of gasolene stations. Over these lights are mounted globes, which are entirely or partially formed of glass having certain advertizing matter thereon. Since the luminosity of these lights is desired to be maximum, it is preferable to have the outer globe entirely formed of glass.

There are certain inherent disadvantages in integral glass globes. The disadvantages are chiefly these; first, if any portion of must be wholly renewed; second, the advertizing printing must be painted on'the exterior surface of the globe, and for this reason is open to the deleterious action of the elements; and third, it is practically 1'l1pOSSibl8 to changethe printing after it has once-been puton the globe. I I I It isknown'that integralglobesappear very attractive, and furthermore, are inexto manufacture. -Therefore, if a removable face or outer layer of glass is printed and placed'with-the printing inwardly on the globe, the above mentioned disadvantages are overcome. V v

The object of this invention is to provide an integral glass globe with replaceable glass outer "faces, and to provide yielding means for retaining the faces on said globe; that is to say, means which will admit of I differential expansion and contraction between the globe and its detachable faces.

In the accompanying drawings Figure I is 'a front elevation of a glass globe with an outer face clipped thereon; Figure II is a fragmentary sectional view taken on the line' II-II of I, showing an enlarged view ofthe means devised to retain the glass face on the globe; Figure III is a similar view I showing a slightly modified fastening clip;

Figure IV is a side elevation of the complete globe; Figure V is a front elevation of the globe showing a still further modification in means for the mounting of the glass 5 outer faces; andFigure VIis an enlarged sectional View taken on the line VI-VI of Fig. V. i

The reference numeral 1 designates an integrally blown glass globe, which has the continuous offsets or shoulders 2 impressed on its sides in the blowing operation. The

numeral 3 denotes the glass faces which are mounted on the front and rear sides of the globe 1, and which have their peripheries lying within or under the shoulders 2. These glass faces 3 are printed on their inner surfaces 3a with the advertising matter 3?) or other desirable data, as shown in Figures I and II, and then they are put into a furnace and glazed. This process permanently and attractively congeals theprinted matter on the surfaces 3w ofthe' removable glass faces 3.

It will be noticed in Figures II, III'and VI that the faces 3 are convexed to a greater degree than the adjacent walls 1a of the globe 1. Although it is practical to permit the walls 1a and the faces 3 to havejthe same curvature, and to be in mutual contact throughout, it is preferable to have the curvature of the glassfaces greater than that of the walls 100. This is for the reason that a double convexed wall, having the outer face thereof formed with a greater degree of convexity, gives a more desirable defraction of the light from, within the globe. That is, it adds a lens effect to this double walled portion of the assembled globe.

As may be seen to particular advantage in Figures II and III, a split ring 4 which is shown as circularin cross section, but which may be of any desired section, is. held by suitable clips. I contemplate forming the ring 4 of tubing (say copper tubing) which is slit along its length, to the end that the edge of the. glass. face may be contained within the tube, andthe tubing caused to form in effect a beaded periphery for the glass face. Figure II shows in detail one of the clips 5, which passes through a hole 6 in the wall of the globe. The curved end 5a of the clip 5 hooks over the ring 4, and the spring 7 tends to seat the said ring snugly against the periphery of the glass face (ill 3. As a matter of choice, I consider it better to employ a ring in this manner than to permit the securing clips 5 to bear immediately upon the glass face 3.

Figure III shows a modified clip arrangement 8. This clip is composed of a rather ductile wire, which is bent around the ring 4 and passed through the hole 9, and the ends thereof are spread to engage the inner surface of the'globe. I11 all of the ring retaining devices it should be noted that their structure is such as to permit the .relative expansion and contraction between the globe and the glass faces. For the same reason the ring 5 is split, and is not a continuous annulus.

Figures V and VI illustrate a further modification in means for retaining the ring at. These means comprise a plurality of metal bands 10, which are fixedzto theouter wall 16 of the globe 1 by means of screws 11. It will be noted that the bands 10 are formed to pass over the shoulders 2 and engage the rings 4. To assist the bands 10 in forcing the rings l-in against the periphery of the glass faces 3, there is positioned a spring 12 between :the said band and the washer 13 on :the wall 16. This form of clip 10 also, is yielding to admit of expansion and contraction of the detachable faces on the globe.

In positioning any of the various clip arrangements, access may be had to the interior of the globe through the :neck '14 there of, and in any of the arrangementsthe attachment of the clips may be readily made.

hat I claim is:

1. In a glass globe structure, an integral glass globe, a continuous shoulder impressed on the wall of said globe, a .convexglass face fitted within said continuous shoulder, said face having a greater degree of convexity than the adjoining wall of the globe to provide sufiicient space for display matter, a split ring having means .I'esilient-ly associated therewith to maintain the said glass face in the fitted position on :the globe.

2. In a display globe comprising a blown glass body which is hollow and substantially closed throughout, save for an open globe supporting neck of relatively small proportions with respect to said body, which glass body includes in structure an annular shoulder having inset therefrom and integral therewith a wall forming a closed side for said glass body, the COll'lblDfltlOll of a concavo-convex glass disk ,bearing display markings on its concave surface, which glass disk is substantially co-extensive in area with said side wall and is secured with its concave surface inward on said wall and with the peniplieryiof said disk lying within said shoulder, and means projecting through said wall of the glass body and engaging said glass disk for securing the disk rigidly upon the said wall, which last-mentioned means admit of expansion and contraction of said disk relatively to the wall adjacent which it is secured.

In a display globe comprising a blown glass body which is hollow and substantially closed throughout, save for an open globe supporting neck of relatively small proportions with respect to said body, which glass bod-y includes in structure an annular shoulder having inset therefrom and integral therewith a wall forming a closed side for said glass body, the combination of a glass disk having display matter glazed on its one surface, which glass disk is substantially coextensive in area with said side wall and is secured with its glazed display matter inward upon the said side wall and with the periphery of said disk lying within said tening means projecting through said wall of the glass body, which fastening means are formed with portions overlying the outer surface of said glass disk for securing the disk rigidly upon said side wall while allowing expanslon and contraction of said disk relatively to said wall adjacent which it is secured.

l. In a display globe comprising a blown glass body which is hollow and substantially closed throughout, save for an open globe supporting neck of relatively small proportions with respect to said body,which;glass body includes in structure anIannu-lar shoulder having inset therefrom and integral therewith a wall forming a closed .side for said glass body, the combination of a concavo-convex glass disk bearing display markings on its concave surface, which glass disk is substantially co-extensive in area with said side wall and is secured with its concave surface inward upon said side wall and with periphery :of saidldisk lying within said shoulder, and a plurality of fasteners for securing the disk rigidly upon said side wall, each of which fasteners includes a shank extending through said side wall and a head portion overlying the convex surface of said disk, said fasteners being adapted to allow expansion and contraction .of said disk relatively to the wall adjacent which it is secured.

5. The combination of the next preceding claim, together with a split ring arranged peripherally upon said glass disk and underlying the head portions of said fasteners.

6. In a display globe comprising a blown glass body which is hollow and substantially closed throughout, save for an open globe supporting neck of relatively tions with respect to said body, which glass body includes in structure an annular shoulder having inset therefrom and integral therewith a wall forming a closed side for said glass body, ,the combination of a glass shoulder, and fassmall propor- 1 disk having display matter glazed on its one surface, which glass disk is substantially coextensive in area with said side wall and is provided on its periphery with a split ring, said glass disk being secured with its glazed display matter inward upon the said side wall and with the periphery of said disk together with said split ring lying adjacent said shoulder, and fastening means projecting through said wall of the glass body, which fastening means are formed with portions overlying said peripherally arranged ring for securing the disk rigidly upon said side wall while allowing expansion and contraction of said disk relatively to said Wall adjacent which it is secured.

In witness whereof, I hereunto set my hand.

EDWARD F. STRAW. 

